Marvel Team-Up vol.3 #20 is follow-up to story from the issues #8-10 same volume, and and as it happens soon after, it's chronologically out of order. There are only two characters appearing that appear in other series Steve Rogers and Maria Hill.

Cap's chronology place it between the first and second arc of New Avengers along with preceding Master of the Ring arc. It's consistent with how other character have the Master of the Ring placed.

So we have the two problems. Firstly, there is no reason for split to exist, as the characters don't appear anywhere else between pages. Secondly, as there is nothing specific to anchor her here Maria's placement should be moved to comply with others. So it should go.